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109 lines
3.5 KiB
Python
109 lines
3.5 KiB
Python
import threading
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from unittest import TestCase
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from test.support import threading_helper
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from random import randint
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from io import BytesIO
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from sys import getsizeof
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class TestBytesIO(TestCase):
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# Test pretty much everything that can break under free-threading.
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# Non-deterministic, but at least one of these things will fail if
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# BytesIO object is not free-thread safe.
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def check(self, funcs, *args):
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barrier = threading.Barrier(len(funcs))
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threads = []
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for func in funcs:
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thread = threading.Thread(target=func, args=(barrier, *args))
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threads.append(thread)
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with threading_helper.start_threads(threads):
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pass
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@threading_helper.requires_working_threading()
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@threading_helper.reap_threads
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def test_free_threading(self):
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"""Test for segfaults and aborts."""
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def write(barrier, b, *ignore):
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barrier.wait()
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try: b.write(b'0' * randint(100, 1000))
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except ValueError: pass # ignore write fail to closed file
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def writelines(barrier, b, *ignore):
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barrier.wait()
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b.write(b'0\n' * randint(100, 1000))
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def truncate(barrier, b, *ignore):
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barrier.wait()
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try: b.truncate(0)
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except: BufferError # ignore exported buffer
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def read(barrier, b, *ignore):
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barrier.wait()
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b.read()
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def read1(barrier, b, *ignore):
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barrier.wait()
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b.read1()
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def readline(barrier, b, *ignore):
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barrier.wait()
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b.readline()
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def readlines(barrier, b, *ignore):
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barrier.wait()
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b.readlines()
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def readinto(barrier, b, into, *ignore):
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barrier.wait()
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b.readinto(into)
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def close(barrier, b, *ignore):
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barrier.wait()
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b.close()
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def getvalue(barrier, b, *ignore):
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barrier.wait()
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b.getvalue()
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def getbuffer(barrier, b, *ignore):
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barrier.wait()
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b.getbuffer()
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def iter(barrier, b, *ignore):
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barrier.wait()
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list(b)
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def getstate(barrier, b, *ignore):
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barrier.wait()
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b.__getstate__()
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def setstate(barrier, b, st, *ignore):
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barrier.wait()
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b.__setstate__(st)
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def sizeof(barrier, b, *ignore):
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barrier.wait()
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getsizeof(b)
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self.check([write] * 10, BytesIO())
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self.check([writelines] * 10, BytesIO())
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self.check([write] * 10 + [truncate] * 10, BytesIO())
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self.check([truncate] + [read] * 10, BytesIO(b'0\n'*204800))
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self.check([truncate] + [read1] * 10, BytesIO(b'0\n'*204800))
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self.check([truncate] + [readline] * 10, BytesIO(b'0\n'*20480))
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self.check([truncate] + [readlines] * 10, BytesIO(b'0\n'*20480))
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self.check([truncate] + [readinto] * 10, BytesIO(b'0\n'*204800), bytearray(b'0\n'*204800))
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self.check([close] + [write] * 10, BytesIO())
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self.check([truncate] + [getvalue] * 10, BytesIO(b'0\n'*204800))
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self.check([truncate] + [getbuffer] * 10, BytesIO(b'0\n'*204800))
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self.check([truncate] + [iter] * 10, BytesIO(b'0\n'*20480))
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self.check([truncate] + [getstate] * 10, BytesIO(b'0\n'*204800))
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self.check([truncate] + [setstate] * 10, BytesIO(b'0\n'*204800), (b'123', 0, None))
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self.check([truncate] + [sizeof] * 10, BytesIO(b'0\n'*204800))
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# no tests for seek or tell because they don't break anything
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